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| author | Boris Brezillon <boris.brezillon@free-electrons.com> | 2015-01-22 18:21:30 +0800 |
|---|---|---|
| committer | Brian Norris <computersforpeace@gmail.com> | 2015-03-11 09:49:28 -0700 |
| commit | 111573ccd89b67fdef64d945cc0e611df85a6ac8 (patch) | |
| tree | ec40f8cf07fb775985097824a95a42f4d04d579c /drivers/mtd/nand/atmel_nand_nfc.h | |
| parent | 393d23c4e22996ad0c694577927bcf13ba31beda (diff) | |
| download | op-kernel-dev-111573ccd89b67fdef64d945cc0e611df85a6ac8.zip op-kernel-dev-111573ccd89b67fdef64d945cc0e611df85a6ac8.tar.gz | |
mtd: atmel_nand: check NFC busy flag by HSMC_SR instead of NFC cmd regs
Currently the driver read NFC command registers to get NFC busy flag.
Actually this flag also can be get by reading HSMC_SR register.
Use the read NFC command registers need mapping a huge memory region.
To save the mapped memory region, we change to check NFC busy flag by
reading HSMC_SR register.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Diffstat (limited to 'drivers/mtd/nand/atmel_nand_nfc.h')
| -rw-r--r-- | drivers/mtd/nand/atmel_nand_nfc.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/mtd/nand/atmel_nand_nfc.h b/drivers/mtd/nand/atmel_nand_nfc.h index 85b8ca6..4d5d262 100644 --- a/drivers/mtd/nand/atmel_nand_nfc.h +++ b/drivers/mtd/nand/atmel_nand_nfc.h @@ -35,6 +35,7 @@ #define NFC_CTRL_DISABLE (1 << 1) #define ATMEL_HSMC_NFC_SR 0x08 /* NFC Status Register */ +#define NFC_SR_BUSY (1 << 8) #define NFC_SR_XFR_DONE (1 << 16) #define NFC_SR_CMD_DONE (1 << 17) #define NFC_SR_DTOE (1 << 20) |
